Rub pork ribs with mustard and season with salt, pepper and caraway seeds and place on a baking sheet.
Peel and quarter the potatoes and also spread them on the baking sheet. Salt the potatoes, season with a little caraway and sprinkle a few more flakes of butter on the potatoes.
Bake in the oven at 200 ° C for approx. 60 minutes, turning repeatedly.